Fix process map parsing when freeing bcc memory (#2151)
Fix process map parsing when freeing bcc memory (#2151)

This fixes the format string used to parse the major and minor
device fields in /proc/self/maps. These fields have hexadecimal
values and hence cannot be parsed as unsigned integers.

Fixes: 51480d05 ("implement free_bcc_memory() API (#2097)")
Reported-by: 46079ae0451eabe0607f8e9566f7fa8750f4ea43@linux.vnet.ibm.com
Signed-off-by: Sandipan Das <ae8113f64d9c72812e097938d25a8975da69c074@linux.ibm.com>
mcaleavya/bcc,brendangregg/bcc,iovisor/bcc,brendangregg/bcc,mcaleavya/bcc,tuxology/bcc,mcaleavya/bcc,brendangregg/bcc,iovisor/bcc,tuxology/bcc,tuxology/bcc,tuxology/bcc,iovisor/bcc,brendangregg/bcc,iovisor/bcc,brendangregg/bcc,iovisor/bcc,tuxology/bcc,mcaleavya/bcc,mcaleavya/bcc